it 9 is the mean of 5,7,a,8,10,11 find a
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HOLA ^_^
5+7+a+8+10+11/6 = 9
41+a/6 = 9
41 + a =9 × 6
41+a= 54
a = 54 - 41
a= 13
5+7+a+8+10+11/6 = 9
41+a/6 = 9
41 + a =9 × 6
41+a= 54
a = 54 - 41
a= 13
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